THS6222 Differential broadband PLC and HPLC line driver with common-mode buffer | TI.com

THS6222
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Differential broadband PLC and HPLC line driver with common-mode buffer

 

Description

The THS6222 is a differential line-driver amplifier with a current-feedback architecture manufactured using Texas Instruments’ proprietary, high-speed, silicon-germanium (SiGe) process. The device is targeted for use in broadband, high-speed, power line communications (HPLC) line driver applications that require high linearity when driving heavy line loads.

The unique architecture of the THS6222 uses minimal quiescent current while achieving very high linearity. The amplifier has an adjustable current pin (IADJ) that sets the nominal current consumption along with the multiple bias modes that allow for enhanced power savings where the full performance of the amplifier is not required. Shutdown bias mode provides further power savings during receive mode in time division multiplexed (TDM) systems while maintaining high output impedance. The integrated midsupply common-mode buffer eliminates external components, reducing system cost and board space.

The wide output swing of 57 VPP (100-Ω load) with 32-V power supplies, coupled with over 650-mA current drive (25-Ω load), allows for wide dynamic range that keeps distortion minimal.

The THS6222 is available in a 24-pin VQFN package with exposed thermal pad and is specified for operation from –40°C to +85°C ambient temperature.

Features

  • Supply range (VS): 8 V to 32 V
  • Integrated midsupply common-mode buffer
  • Large-signal bandwidth: 195 MHz (VO = 16 VPP)
  • Slew rate (16-V step): 5500 V/µs
  • Low distortion (VS = 12 V, 50-Ω load):
    • HD2: –80 dBc (1 MHz)
    • HD3: –90 dBc (1 MHz)
  • Output current: 338 mA (VS = 12 V, 25-Ω load)
  • Wide output swing (VS = 12 V):
    • 19.4 VPP (100-Ω load)
    • 18.6 VPP (50-Ω load)
  • Adjustable power modes:
    • Full-bias mode: 19.5 mA
    • Mid-bias mode: 15 mA
    • Low-bias mode: 10.4 mA
    • Low-power shutdown mode
    • IADJ pin for variable bias
  • Integrated overtemperature protection
  • Pin-compatible with the 24-pin THS6212 VQFN

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Parametrics

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Part number Order Number of channels (#) Architecture Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) BW @ Acl (MHz) Acl, min spec gain (V/V) Vn at flatband (Typ) (nV/rtHz) Vn at 1 kHz (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Vos (offset voltage @ 25 C) (Max) (mV) Rail-to-rail Features Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) CMRR (Typ) (dB) Input bias current (Max) (pA) Offset drift (Typ) (uV/C) GBW (Typ) (MHz) Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz
THS6222 Order now 1     PLC Line Driver     8     32     128     5     2.7     9     19.5       No     Shutdown
Adj Bias    
-40 to 85     VQFN | 24     24VQFN: 20 mm2: 4 x 5 (VQFN | 24)     64     6000000       128     400     98     89     1    
THS6212 Order now 1     PLC Line Driver     10     28     150     10     2.7     9     21     50     No     Shutdown
Adjustable BW/IQ/IOUT    
-40 to 85     VQFN | 24     24VQFN: 20 mm2: 4 x 5 (VQFN | 24)     65     3500000     155     150     417     100     89     1    
THS6214 Order now 2     DSL Line Driver     10     28     160     1     2.7     8.5     21     50     No     Shutdown
Adjustable BW/IQ/IOUT    
-40 to 85     HTSSOP | 24
VQFN | 24    
24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
24VQFN: 20 mm2: 4 x 5 (VQFN | 24)    
65     3500000     155     160     416     100     89     1